Quick Details

Packaging & Delivery

Packaging Details

carton,pallet

Delivery Time

15 days

polyimide film

Low expansion coefficient polyimide film

I Technical requirements

1.1 Film should be smooth and flat with neat non-torn edges and without any defects such as wrinkles, tears, gels blisters or bubbles, pinholes and foreign impurities. Material is supplied in rolls and the core ID is 76mm

1.2 Dimension

1.2.1 Thickness and Tolerance

Unit: (μm)

Thickness

12.5

25.0

Tolerance

+2/-1

+1/-2

Thickness can be supplied by the requests of customers

1.3Performance

No.

Index

Unit

Value

12.5µ m

25.0μm

1

Tensile

MD,CD

MPa

≥200

2

Elongaton

MD,CD

%

≥25

3

Shrinkage MD,CD

150°C,30min

%

≤0.2

4

Electrical operating frequency intensity

Average

MV/m

200

200

5

Heat expansion coefficient 25-200°C

ppm/°C

20-35

6

A wet sexual 100%RH

%

≤ 2.5

7

Volume resistivity 200°C

Ωcm

≥1.0×1012

8

Relative didlectric constant 48Hz~62Hz

—

3.0-3.5

9

Dielectric loss factor

48Hz~62Hz

—

≤0.002

2 Test Methord

2.1 Appearance,material and core

Film appearance,material and core is tested by naked eyes. Material port side is measured by ruler of scale of every 0.5mm.

2.2Dimension

2.2.1 The dimension is measured as the requests of 4.1.1 of GB/T13541-1992

2.2.2 Length is measured by ruler or other devices.

2.2.3 Width is measured as the requests of chanpter 6 of GB/T13541-1992. Width over 26mm is measureed by ruler of scale of every 0.5mm and width below 26mm by device of scale of every 0.02mm.

2.3 Tensile and elongation

Tensile and elongation are measured as the requests of chapter 11 of GB/T13541-1992. Tensile speed is 50mm/min.Fixture distance is 100mm.

2.4 Shrikage

Shrikage is measured as the requests of chapter 22 of GB/T13541-1992. Test temperature is 150°C±5°C,time 30min.

2.5 Electrical operating frequency intensity

Electrical operating frequency intensity is measured as the request of 16.1 of GB/T13541-1992. The test is made in air. The rising voltage speed is 500V/s. The up and down ID of electrode is 6mm. 10 electrodes are tested.

2.6 Volume resistivity

Volume resistivity is measured by 16.1 of GB/T13541-1992 contact electrode method. Test voltage is 250V. Audio-visual time is 1min. Test number is 5.The 5 samples are treated 1 hour under the condition of 200°C±5°C and then measured under the same condition.